Punching



(N9 Model.) 2 Sheets-Sheet 1.

W. RENSHAW & N. W. THILLMAN.

PUNGHING, SHEARING, AND BMBOSSING MACHINE. No. 353,589. Patented Nov.80, 1886.

(No Model.) 2 Sheets-Sheet 2.

W. RENSHAW & N. W. THILLMAN.

PUNGHING, SHEARING, AND EMBOSSING MACHINE.

Patented Nov. 30, 1886.

NITED STATES PATENT OFFIC WILLIAM RENSHAVV AND NICHOLAS W. THILLMAN, OFCHICAGO, ILLINOIS.

PUNCHING, SHEARING, AND EMBOSSING MACHINE.

SPECIFICATION forming part of Letters Patent No. 353,589, dated November30, 1886.

Application tiled September 6, 18F6. Serial No. 212,859. (No model.)

T0 at whom it may concern.-

Be it known that we, WILLIAM RENSHAW and NICHOLAS W. THILLMAN, both ofOhicago, in the county of Cook and State of Illinois, have inventedcertain new and useful Improvements in Punching, Embossing, and ShearingMachines, of which the following is a full, clear, and exactdescription.

Our invention has for its special object the rapid and economicalproduction of car and other seals made of strips of sheet metal, whetherthe seals be plain or stamped and punched.

Our invention consists in the combination, with punches, shear-blades,and dies, of appropriate means of operating the same, and feedingmechanism for feeding the plates from which the seals are made.

In the drawings, Figure 1 is a side view of the machine. Fig. 2 is asection, and Fig. 3 an end view, of the moving dies and shearblade. Fig.4 is a section of a portion of gear 0, showing the clutch F. Figs. 5, 6,and 7 are respectively sectional, plan, and end views of the part B,Fig. 1.

The machine is constructed indnplicate, the parts on each side of theliner m, Fig. 1, being alike. One only of these parts, therefore, isshown.

A, Fig. 1, is the frame of the machine. Secured to it is the casting B,containing the feed-works, stationary shear-blades, and dies. The gear 0revolves freely upon the projecting ends of the shafts E E. The gear 0is driven by a pulley and pinion on a shaft supported on brackets at theside of A; but for the sake of clearness they are omitted from thedrawings. End motion of shaft E is prevented by the collar 6.

D is a rod sliding through the shaft E. At the inner end of rod D istheclutch F, which is shown in detail in Fig. 4. The clutch F is drivenby the gear C, and when the rod D is drawn out engages with itscounterpart, the end of the shaft E thus setting the machine inoperation. As will be seen on inspection of Fig. 4, the clutch-face isso shaped as to engage only once in a revolution,with the result thatthe gear and shaft must always have the same relative position. This isrendered necessary by the fact that the feed is operated directly fromthe gear 0, and must take effect while the slide-block O is raised. Theslideblock 0 is constructed as in ordinary powershears.

The feed mechanism may be understood by referring to Figs. 1, 5, and 6.Passing through E is the shaft WV, to which are keyed the ratchet-wheelsJ J and the pinion K. Upon one end of the shaft W is wound the spring V,and on the other is pivoted the vibrating arm I, which carries afeed-pawl, p, engaging in the ratchet-wheel J. The vibrating arm Ireceives motion from a projection, 12, on the hub of gear 0, through therod H and bell-crank lever G, the latter having its upper extremity bentat right angles, so as to project vertically over the axis of the gear0. The ratchet J, with its pawl f, serves as a retaining-catch.Extending across B is a second shaft, Z, to which shaft are attached armj and fingers m m, the latter projecting under the pawls p f. A pin, is,is inserted near the circumference of the pinion K, so as to come incontact with the arm and raise fingers m m, as hereinafter explained.\Vhen the fingers m on have been raised by the shaft Z, they areretained by the catch g, which is impelled by the spring h. The rack Mmeshes with the pinion K. It carries the cross-piece M and grip N.

The arrangement of the moving shear-blade, dies, and punches are clearlyshown in Figs. 2 and 3, in which P is the shear-blade, U U are punches,and R Rdies. If it is desired to make seals without the impress ot' thedies R R, the shims are removed and the dies set higher. The lower shearblade, Y, has a counterpart of the dies R R sunk in its face. Holes Z Z,drilled through blade Y, form dies or matrices for the punches U U. ThisjuX- taposition of the embossing and shearing device is necessary in aself-feeding machine, in order that the succession between the embossing or punching and the shearing may be im mediate, without which theremust be waste of material.

The operation is as follows: The plate of sheet metal, firmly held bythe grip N, is fed forward by successive steps, its advancing edge beingsuccessively operated upon by the punches and dies and the shear-blade.\Vhen the grip has reached the limit of its forward travel, the pin it,Fig. 5, comes in contact with the armj, thereby lifting the fingers m mand ICO disengaging the pawl f, and on the backward stroke of the arm I,the pawl 19. At the same time the catch 9 springs under the fingers m m.The shaft W being thus released, reverses its motion under the action ofthe spring V, and the machine is ready for the insertion of a freshplate.

' It is practicable to operate in this way on a thickness of severalplates, greatly increasing the product of the machine.

The construction of the part B of this machine is such that it may beeasily adapted to be operated by an ordinary power-shear or a slotter.

We claim 7 1-. The combination,with a punching or cmbossing andshearingmachine, of an automatic feeding device, consisting of thesliding platecarrier M N L, and mechanism for driving the latter,with anautomatic device, substantially asshown and described, for releasing thefeed mechanism when it reaches the limit of its travel.

2. The combination of vibrating arm I, pawl 25 p, retaining-pawl f,spring V, and pinion K,

with the plate-carrier M N L, substantially as and for the purpose setforth. I

3. In a plate-feeding device, the combination ofpin 7c, arm j, shaft Z,fingers m m, and catch g, substantially as and for the purpose setforth.

4. In an embossing and shearing apparatus,

the combination of shear-blade P, dies R R,

and shear-blade Y, having on its edge-face the counter impression of thedies R 5. The combination, in an embossing and shearing apparatus havingan automatic feeding device, substantially as described, of shearbladeP, dies R R, and shear-blade Y, having

